Composite tire and means for manufacturing same



Patented Oct. l8, I898.

J. J. BUSENBENZ. COMPOSITE TIRE AND MEANS FOR MANUFACTURING SAME.

(Application filed Feb. 1, 1898.)

(No Model.)

P i W/WMWWMH w r m lJNrrn STATES ATENT OFF-ion.

JACOB J. BUSENBENZ, OF CHICAGO, ILLINOIS.

COMPOSITE TIRE AND MEANS FOR MANUFACTURING SAME.

SPECIFICATION forming part of Letters Patent No. 612,767, dated October18,1898.-

Application filed February 1, 1898. Serial No. 668,716. (No model-l Toall whom it may concern:

Be it known that I, JACOB J. BUSENBENZ, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Composite Tires and Means forManufacturing the Same, of which the following is a specification.

The object of my invention is to provide a novel construction of rubbertire for a roller or wheel particularly for use on roller-skates and thelike (though not necessarily limited to such use) which shall possess ina high degree the attributes of durabilityand speed; and my inventionconsists in the general as also in the more specific construction of myimproved composite tire and of the means I employ in its manufacture.

Referring to the accompanying drawings, Figure 1 is a transverse sectionof a roller equipped with a pneumatic tire constructed in accordancewith my invention; Fig. 2, a horizontal section of the same with thevalve removed; Fig. 3, a transverse section of the tired roller as itappears in the mold in which the tire is vulcanized; Fig. 4:, ahorizontal section of the same, taken at the line 4 on Fig. 3 and viewedin the direction of the arrow; and Fig. 5, a broken perspective viewshowing one of the metal tread-sections on the centering-ring forcarrying them during the vulcanizing operation.

A is the hub, center, or body portion of the roller, formed with atire-rim r, one section of which may be made removable, as represented.

B is a composite pneumatic tire composed of rubber material, such as iscommonly employed or suitable for such tires-usually canvas andrubberlayers-and a thickened tread portion B, having embedded in it atintervals about its circumference metal (preferably aluminium) sections0, Fig. 5, each composed of an outer tread-plate p and an inner plate19, connected together near their opposite ends by webs p p to leave aspace between the two plates.

To manufacture my improved tire, the rubber tubing prepared forvulcanization is formed about the rim r and the whole is then placed andcentered within the circle described by the series of plates 19' and 10,ten

of each of which are shown in the illustration. These plates aresupported at intervals on a centering-ring 0 through the medium of necks0, extending radially inward from the inner edgeof the ring. The ring 0,necks 0, plates 13 and p, and their connecting-webs p are cast integralwith each other out of suitable light metal, preferably aluminium, ashereinbefore stated.

With the roller-body and partially-formed tire thereon thus centered inthe plate-carrying ring 0 the tread is built up with layers of rubbermaterial, thereby embedding therewith the plates and p,the latter orinner ones being completely embedded, as also the webs 19 (at which thesections 0 may be connected from one to the other by links n, or not, asdesired,) while the outer surfaces of the plates 10 are left exposed atthe periphery of the tread B to form sections thereof. One of thesections 0 is provided with coincident openings through the plates p ptoadmit the valve D, which is adjusted in the tire through the tread. Thetire thus formed on the rollerbody A is then adjusted between the twoparts of a vulcanizing-mcld E,properly shaped to receive the whole, whenthe vulcanizing operation is performed in the usual or any suitablemanner. Thereafter the roller, with the composite tire and ring 0'encircling it, is removed from the mold, and the ring, having served itspurposeof holding out the sections 0, is removed by cutting, as bystamping off the neckso close to the plates 19, thus leaving the tirein'the form in which it is represented in Figs. 1 and 2.

The pneumatic tire thus formed possesses in a high degree the attributesof noiselessness, resiliency, durability, and speed.

What I claim as new, and desire to secure by Letters Patent, is-

l. A composite pneumatic tire having a thickened tread portion built upof rubber material and metal sections embedded therein at intervalsabout the tread portion, each metal section comprising an inner andanouter plate having a web connection extending between them transverselyof the tire, substantially as described.

2. A composite pneumatic tire having a thickened tread portion built upofrubber material and metal sections embedded therein at intervals aboutthe tread portion, each metal section comprising an inner plate and anouter plate having a web connection extending between them transverselyof the tire, the outer section being exposed at said tread portion,substantially as described.

3. A composite pneumatic tire having a thickened tread portion built upof rubber material having embedded therein, at intervals about itscircumference, metal sections linked together and each comprising a pairof metal plates having a Web connection leavinga space between them,substantially as described.

4:. A roller comprising, in combination, a body portion A having a rim1' and a com posite pneumatic tire B on the rim having a tread B builtup of rubber material and metal sections 0 embedded therein, each formedof a pair of connected plates 19 and p, substantially as described. 1

5. In combination, the ring 0 having necks 0 extending from it atintervals about its inner circumference,and sections 0 carried by saidnecks and each comprisingapair of Webconnected plates 19 and 19,substantially as and for the purpose set forth.

JACOB J. BUSENBENZ.

In presence of RAY I-IUToHms, IDA CRARY.

